It is an original Xiaomi Yi sports camera battery, same as the battery inside the camera you already have . 960mAh and 3.6V, with original Xiaomi Yi battery protective case. Safe and neat . Perfect for taking long video or shooting outdoor. It can be recharged by camera itself or any standard type of dual charger in the market. 

• Original product from Xiaomi Yi Camera
• Rechargeable Lithium-ion Battery
• 960mAh, 3.6V
• Convenient protective case is included